I found a cool site with an alphabetical listing of logos for worldwide companies. It explains why the company designed their logo the way they did. I hope it is helpful.

I’m partial to this one:

SAAB logo

The logo of this world famous car manufacturer depicts a mythological bird which is also used on the official coat of arms of the Count von Skane and was used as the symbol for the Swedish province Skane, where the SAAB company was formed.

(the site is linked to the logo)